It's electronic, a Whelen Hornet. Probably replaced by a 2902 or OA2 like you said. https://www.youtube.com/watch?v=bWj0L3DNBxE It in river village not lake I dont know if the whelen hornet is active anymore Whenever you go back, can you try to snap a photo? go to this link it gives you a top veiw ...

They dont allow phones there only disposable cameras for the campers

There is a siren that looks like a WPS-2902, OA2 or a FHS2 but I think it’s Electromechanical. It’s at Camp Tecumseh for more information of where it is. It's electronic, a Whelen Hornet. Probably replaced by a 2902 or OA2 like you said. https://www.youtube.com/watch?v=bWj0L3DNBxE It in river villa...

It is in river village by the pool and old cabin

Its in brookston, carrol county indiana

There is a siren that looks like a WPS-2902, OA2 or a FHS2 but I think it’s Electromechanical. It’s at Camp Tecumseh for more information of where it is.